OK. First, I know it's a mound of something! I'm just curious what. I walk this area every day, and today, I saw these strange mounds formed in a specific row. I think they are coming from a bed of mulch. If I remember, there were about four mounds. I wonder if it was caused by animal digging. It was too specific.

I apologize for the lousy pictures! My lens wasn't appropriate for this so I couldn't get any decent shots. After experiencing some mushrooms disappearing on me after I shot them one day, I've learned not to assume they'll still be there the next day! If they're there tomorrow, I may try shooting these with my iPhone, but I didn't have the time.

Just seemed weird in how it was laid out, clearly not random clumps of ? dirt.

About 30 years ago I had a Ferret for a short time. I made a harness for him out of Venetian Blind cord and I would take him out and let him hunt the moles, he would stick his nose under the dirt of the run then he was like a plow he only caught one mole, but his hunting sent then packing!! It was a trip to watch him, plow a bit pull his head out and sneeze a couple of times then back at it.
But then instead of ridges of dirt I had ruts!!! But I didn't have moles the rest of the time I lived there.